Respuesta :

Snowflakelove319
the best way to do this is to set up a proportion

50     x
---- = ----
3        12

then cross multiply and divide ( 50 times 12) / 3= 200

he can do 200 situps in 12 minutes
Dezwilliams16
Ben can do 200 sit-ups in 12 minutes.

good job